316.5 g/kg = 318.051 PSU
| g/kg | PSU |
|---|---|
| 301.5 g/kg | 302.977 |
| 306.5 g/kg | 308.002 |
| 311.5 g/kg | 313.026 |
| 316.5 | 318.051 |
| 321.5 g/kg | 323.075 |
| 326.5 g/kg | 328.1 |
| 331.5 g/kg | 333.124 |
316.5 g/kg = 318.051 PSU
1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)